From: Patrick McHardy Date: Tue, 15 Jan 2008 07:47:25 +0000 (-0800) Subject: [NETFILTER]: nf_conntrack_sctp: don't take sctp_lock once per chunk X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4a64830af0fd4dbec908cfbab117def5086acd4a;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [NETFILTER]: nf_conntrack_sctp: don't take sctp_lock once per chunk Don't take and release the lock once per SCTP chunk, simply hold it the entire time while iterating through the chunks. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c index 7baabc045342..177e8f60aa1c 100644 --- a/net/netfilter/nf_conntrack_proto_sctp.c +++ b/net/netfilter/nf_conntrack_proto_sctp.c @@ -325,9 +325,8 @@ static int sctp_packet(struct nf_conn *ct, } old_state = new_state = SCTP_CONNTRACK_MAX; + write_lock_bh(&sctp_lock); for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) { - write_lock_bh(&sctp_lock); - /* Special cases of Verification tag check (Sec 8.5.1) */ if (sch->type == SCTP_CID_INIT) { /* Sec 8.5.1 (A) */ @@ -378,8 +377,8 @@ static int sctp_packet(struct nf_conn *ct, ct->proto.sctp.state = new_state; if (old_state != new_state) nf_conntrack_event_cache(IPCT_PROTOINFO, skb); - write_unlock_bh(&sctp_lock); } + write_unlock_bh(&sctp_lock); nf_ct_refresh_acct(ct, ctinfo, skb, *sctp_timeouts[new_state]);